SEA
UTC/GMT -7:00 hours
Friday, 11:18pm
Qsensor makes use of data from Seattle Tacoma International Airport.
Waiting times may not accurately reflect your experience. It is advisable to arrive at the airport well in advance and follow the recommendations of the airlines and airports.
Average wait times based on the last 3 weeks of data.
Commonly known as Sea-Tac is the primary commercial aviation gateway for the Pacific Northwest and serves as a major hub for Alaska Airlines and Delta Air Lines. Located approximately 14 miles south of downtown Seattle in the city of SeaTac, the airport handled a record volume of over 52.6 million passengers in 2024.
The facility features a central Main Terminal with four concourses (A, B, C, D) and two detached satellite terminals (North and South) that are accessible only via the automated SEA Underground train system. Recent modernizations include the International Arrivals Facility (IAF), which utilizes a unique “Bags First” clearance protocol.
No. The 4th Floor of the parking garage, formerly known as “Terminal Direct”, is now exclusively Reserved Parking. You cannot drive up and grab a ticket for this floor. You must book a spot online at least 6 hours in advance to generate a QR code for entry. If you attempt to enter without a reservation, you will be diverted to General Parking (Floors 1-3 or 5-8).
SEO Spotsaver Is a free service that allows you book a time go through security. Spot Saver is available daily from 4 a.m. to 10 p.m. at Checkpoint 4 and TSA Checkpoint 2 using this link.
It depends on the ride type:
Yes, the walk from the terminal to the SeaTac/Airport Station is considered long (about the length of a concourse) and involves crossing the parking garage. However, the airport offers a free electric shuttle service that runs between the station and the airport skybridge for those with heavy luggage or mobility issues.
At SEA, all checkpoints lead to all gates. You do not have to use the checkpoint closest to your airline’s counter. If Checkpoint 5 is backed up, check the wait times on the FlySEA app and walk to Checkpoint 2 or 3, then use the airside corridor to reach your gate.
You must take the SEA Underground train; you cannot walk to these satellite terminals.
Yes. All main terminal concourses (A, B, C, D) are connected airside. You can walk from the A gates to the D gates without leaving security, though it takes about 15-20 minutes.
SEA uses a Bags First protocol which is different from many other US airports:
Yes. After clearing customs and re-checking your bags, you must go through TSA screening to re-enter the secure terminal. The International Arrivals Facility has its own checkpoint, but it closes at night (approx. 9:45 PM). If you arrive late, you may be directed to exit and use the main terminal checkpoints.
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Live data: For the majority of the airports we track we use live data from the airport. For the remaining airports we provide a modelled projection, combined with crowdsourced data.
Search: By airport name, IATA code, city, county, country or region. To save you time, we keep your last visited airports on the front page. If you can’t find an airport, contact us using the contact form and we will look to add it.
Current average wait time: The airport’s latest average security, passport control or customs queue wait time. If the airport has multiple queues, we display the average of them. If you want a more granular view that includes wait times for individual queues, take a look at the terminal level wait times. We regularly update each airport’s data, but make sure you click the “i” icon to check when the last update was made.
Terminal level wait times: The latest security or customs queue wait time for individual terminals. Click on the terminal to access more information at the terminal level. Please note that this data is not available for all airports. We are working to expand this functionality to as many airports as possible.
Historical wait times: The typical wait time on different days and times over the past 2 weeks. Click the filter at the top right of the graph to cycle through the days of the week.
Add a security or customs queue wait time: How was your airport security experience? Contribute to the community by inputting your wait time. This feature is only available for airports where Qsensor does not automatically track data. To add a wait time, simply click the “Add Your Time” button on the airports page and follow the instructions.
Please note that this data is monitored and may be modified or deleted if found to be invalid.
Click the “i” icon to view and take note of more contextual information on each airport. “Airport Last Updated” denotes the last time the data was refreshed.
Our sources for wait time data vary and may include air travel data aggregators, federal agencies such as the TSA, CATSA CBP, or information from the airport and its affiliated service providers. For some airports, Qsensor utilises its proprietary queue modelling technology to project wait times. Additionally, we crowdsource data from passengers who have input their wait time using the “Add Your Time” button.
Qsensor is not affiliated with any airport, airline, or associated service provider.
We regularly check queue times and flight delays for accuracy, however all times are estimates and waiting times and delays may not accurately reflect your experience. It is advisable to arrive at the airport well in advance and follow the recommendations of the airlines and airports.
There are a wide array of ways that queue data is measured. Including but not limited to looking at how long a passenger takes to get from scanning their boarding pass to exiting the security or customs area. Auditing passengers on how long it took them to pass through security or customs as well as Qsensors’ proprietary system for user added wait times.
For airport wait times, we currently support over 140 airports worldwide. Whether it be London Heathrow, Istanbul, or Miami – we have got you covered. More are added all the time. Is Qsensor missing an airport that you want to be supported? We are more than happy to accommodate your request, get in touch via the contact form.
For flight delays and cancellations, we currently support 12 airports, with the goal of expanding coverage going forwards.
Qsensor automatically tracks wait times for a variety of airports including London Heathrow, Frankfurt, Hartsfield-Jackson Atlanta, Chicago O’Hare, Amsterdam Schiphol, Kempegowda Bangalore, Madrid Barajas, Hong Kong, Istanbul, and many more!
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The flight delay tracker gives you a comprehensive view of flight status delays, both for the current day and historically on a per flight basis. Tap on a weekday to see all flights that have historically taken off on that day and their typical delay over the past two weeks. You can also search for your flight using your flight number and view the airport’s average delay.
Get insights into flight on-time performance and make better travel decisions. Please note, this feature is not available for all airports, but we’re adding more all the time!
To keep wait times relevant, the message “There is currently no data for this airport.” is shown when no traveller has recently inputted a wait time.
For airports Qsensor automatically tracks, this message may also be shown if we haven’t recently gotten data from the airport. This typically rectifies itself within 12 hours.
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